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Corrosion-resistant and high-temperature-resistant coating applicable to titanium aluminum alloy and preparation method thereof

A titanium-aluminum alloy and corrosion-resistant technology, applied in the field of high-temperature-resistant alloys, can solve the problems of high-temperature resistance and low corrosion resistance of titanium-aluminum alloys, and achieve superior high-temperature corrosion resistance, uniform film structure and thickness, and strong adhesion Effect

Inactive Publication Date: 2012-05-16
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is the technical problem that the existing titanium-aluminum alloy has low temperature resistance and low corrosion resistance, and a corrosion-resistant and high-temperature resistant coating suitable for titanium-aluminum alloy and its preparation method are provided

Method used

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  • Corrosion-resistant and high-temperature-resistant coating applicable to titanium aluminum alloy and preparation method thereof
  • Corrosion-resistant and high-temperature-resistant coating applicable to titanium aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 preparation alloy composition is Ti 42 -Al 48 -Cr 8 -Ag 2 (at%) coating

[0015] (1) Coating preparation method

[0016] Deposition of Ti on Titanium Alloy Using SBH-5115D Magnetron Sputtering Apparatus 42 -Al 48 -Cr 8 -Ag 2 (at%) coating. Ti for sputtering target 42 -Al 48 -Cr 8 -Ag 2 (at%) alloy, the size is 380 mm × 126 mm × 7 mm, and the size of the matrix as-cast alloy is 10 mm × 10 mm × 2.5 mm. Before sputtering, the substrate samples were polished with No. 600 sandpaper, and then ultrasonically cleaned with acetone for 15 min. The sputtering parameters are as follows: the degree of vacuum is 0.5×10 -2 Pa, the argon pressure is 0.2-0.3 Pa ， The substrate temperature is 200 0 C, the power is 1800 W, and the sputtering time is 8 h. Rotary sputtering.

[0017] (2) High temperature salt corrosion experiment

[0018] The high temperature hot corrosion adopts the salt immersion method, and the experimental temperature is 900 o c. Th...

Embodiment 2

[0019] Embodiment 2 preparation alloy composition is Ti 39 -Al 49 -Cr 9 -Ag 3 (at%) coating

[0020] (1) Coating preparation method

[0021] Deposition of Ti on Titanium Alloy Using SBH-5115D Magnetron Sputtering Apparatus 39 -Al 49 -Cr 9 -Ag 3 (at%) coating. Ti for sputtering target 39 -Al 49 -Cr 9 -Ag 3 (at%) alloy, the size is 380 mm × 126 mm × 7 mm, and the size of the matrix as-cast alloy is 10 mm × 10 mm × 2.5 mm. Before sputtering, the substrate samples were polished with No. 600 sandpaper, and then ultrasonically cleaned with acetone for 15 min. The sputtering parameters are as follows: the degree of vacuum is 0.5×10 -2 Pa, the argon pressure is 0.2-0.3 Pa ， The substrate temperature is 200 0 C, the power is 1800 W, and the sputtering time is 8 h. Rotary sputtering.

[0022] (2) High temperature salt corrosion experiment

[0023] The high temperature hot corrosion adopts the salt immersion method, and the experimental temperature is 900 o c. Th...

Embodiment 3

[0024] Embodiment 3 preparation alloy composition is Ti 45 -Al 47 -Cr 7 -Ag 2 (at%) coating

[0025] (1) Coating preparation method

[0026] Deposition of Ti on Titanium Alloy Using SBH-5115D Magnetron Sputtering Apparatus 45 -Al 47 -Cr 7 -Ag 2 (at%) coating. Ti for sputtering target 45 -Al 47 -Cr 7 -Ag 2 (at%) alloy, the size is 380 mm × 126 mm × 7 mm, and the size of the matrix as-cast alloy is 10 mm × 10 mm × 2.5 mm. Before sputtering, the substrate samples were polished with No. 600 sandpaper, and then ultrasonically cleaned with acetone for 15 min. The sputtering parameters are as follows: the degree of vacuum is 0.5×10 -2 Pa, the argon pressure is 0.2-0.3 Pa ， The substrate temperature is 200 0 C, the power is 1800 W, and the sputtering time is 8 h. Rotary sputtering.

[0027] (2) High temperature salt corrosion experiment

[0028] The high temperature hot corrosion adopts the salt immersion method, and the experimental temperature is 900 o c. Th...

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Abstract

The invention relates to a corrosion-resistant and high-temperature-resistant coating applicable to a titanium aluminum alloy. The coating alloy has the nominal ingredients of 39 to 45 at percent of Ti, 47 to 49 at percent of Al, 7 to 9 at percent of Cr and 1 to 3 at percent of Ag. A magnetron sputter plating method is adopted for preparing the coating. The titanium aluminum based titanium aluminum chromium silver is adopted as coating materials of the titanium aluminum alloy, the performance that the coating and a substrate have the same expansion coefficient at high temperature and the like is utilized, and the effect of the chromium and the sliver for improving the anti-corrosion performance in the titanium aluminum is also considered. The magnetron sputter plating characteristic is used for preparing the titanium aluminum chromium silver coating with the firm combination on the titanium aluminum substrate, and the anti-corrosion performance of the titanium aluminum alloy is obviously improved at high temperature.

Description

technical field [0001] The invention belongs to the technical field of high-temperature-resistant alloys, and in particular relates to a corrosion-resistant and high-temperature-resistant coating suitable for titanium-aluminum alloys and a preparation method thereof. Background technique [0002] Due to the many advantages of titanium-aluminum alloy, as a potential high-temperature structural material, it has great potential for application in aviation, automobile, and energy industries, and has a good application prospect. However, the high-temperature corrosion resistance of titanium-aluminum alloys cannot meet the needs, which is a major problem in its application. For this, some people use various coatings to protect them, such as enamel coatings, etc. Different coatings, the combination between these coatings and titanium-aluminum will be weak under high temperature. For example, titanium-aluminum coating, although the coating is firmly bonded to the substrate, it canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16C23C14/35
Inventor 席艳君
Owner ZHONGYUAN ENGINEERING COLLEGE
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